1 /* cyreg.h 7.4 87/04/01 */ 2 3 /* 4 * Tapemaster controller definitions. 5 */ 6 7 /* 8 * With 20-bit addressing, the intermediate buffer 9 * must be allocated early in startup(). 10 */ 11 #define CYMAXIO (32*NBPG) /* max i/o size */ 12 char *cybuf; 13 14 /* for byte swapping Multibus values */ 15 #define htoms(x) (short)((((x)>>8)&0xff) | (((x)<<8)&0xff00)) 16 17 #define b_repcnt b_bcount 18 #define b_command b_resid 19 20 /* 21 * System configuration pointer. 22 * Memory address is jumpered on controller. 23 */ 24 struct cyscp { 25 char csp_buswidth; /* system bus width */ 26 #define CSP_16BITS 1 /* 16-bit system bus */ 27 #define CSP_8BITS 0 /* 8-bit system bus */ 28 char csp_unused; 29 u_char csp_scb[4]; /* point to system config block */ 30 }; 31 32 /* 33 * System configuration block 34 */ 35 struct cyscb { 36 char csb_fixed; /* fixed value code (must be 3) */ 37 char csb_unused; /* unused */ 38 u_char csb_ccb[4]; /* pointer to channel control block */ 39 }; 40 41 #define CSB_FIXED 0x3 42 43 /* 44 * Channel control block definitions 45 */ 46 struct cyccb { 47 char cbcw; /* channel control word */ 48 char cbgate; /* tpb access gate */ 49 u_char cbtpb[4]; /* first tape parameter block */ 50 }; 51 52 #define GATE_OPEN (char)(0x00) 53 #define GATE_CLOSED (char)(0xff) 54 55 #define CY_GO(addr) movob((addr), 0xff) /* channel attention */ 56 #define CY_RESET(addr) movob((addr)+1, 0xff) /* software controller reset */ 57 58 #define CBCW_IE 0x11 /* interrupt on cmd completion */ 59 #define CBCW_CLRINT 0x09 /* clear active interrupt */ 60 61 /* 62 * Tape parameter block definitions 63 */ 64 struct cytpb { 65 long tpcmd; /* command, see below */ 66 short tpcontrol; /* control word */ 67 short tpcount; /* return count */ 68 short tpsize; /* buffer size */ 69 short tprec; /* records/overrun */ 70 u_char tpdata[4]; /* pointer to source/dest */ 71 short tpstatus; /* status */ 72 u_char tplink[4]; /* pointer to next parameter block */ 73 }; 74 75 /* control field bit definitions */ 76 #define CYCW_UNIT (0x000c<<8) /* unit select mask, 2 bit field */ 77 #define CYCW_IE (0x0020<<8) /* interrupt enable */ 78 #define CYCW_LOCK (0x0080<<8) /* bus lock flag */ 79 #define CYCW_REV (0x0400>>8) /* reverse flag */ 80 #define CYCW_SPEED (0x0800>>8) /* speed/density */ 81 #define CYCW_25IPS 0 82 #define CYCW_100IPS (0x0800>>8) 83 #define CYCW_WIDTH (0x8000>>8) /* width */ 84 #define CYCW_8BITS 0 85 #define CYCW_16BITS (0x8000>>8) 86 87 #define CYCW_BITS "\20\3REV\005100IPS\00716BITS\16IE\20LOCK" 88 89 /* 90 * Controller commands 91 */ 92 93 /* control status/commands */ 94 #define CY_CONFIG (0x00<<24) /* configure */ 95 #define CY_NOP (0x20<<24) /* no operation */ 96 #define CY_SETPAGE (0x08<<24) /* set page (addr bits 20-23) */ 97 #define CY_SENSE (0x28<<24) /* drive status */ 98 #define CY_CLRINT (0x9c<<24) /* clear Multibus interrupt */ 99 100 /* tape position commands */ 101 #define CY_REW (0x34<<24) /* rewind tape */ 102 #define CY_OFFL (0x38<<24) /* off_line and unload */ 103 #define CY_WEOF (0x40<<24) /* write end-of-file mark */ 104 #define CY_SFORW (0x70<<24) /* space record forward */ 105 #define CY_SREV (CY_SFORW|CYCW_REV) /* space record backwards */ 106 #define CY_FSF (0x44<<24) /* space file forward */ 107 #define CY_BSF (CY_FSF|CYCW_REV) /* space file backwards */ 108 #define CY_ERASE (0x4c<<24) /* erase record */ 109 110 /* data transfer commands */ 111 #define CY_BRCOM (0x10<<24) /* read buffered */ 112 #define CY_BWCOM (0x14<<24) /* write buffered */ 113 #define CY_RCOM (0x2c<<24) /* read tape unbuffered */ 114 #define CY_WCOM (0x30<<24) /* write tape unbuffered */ 115 116 /* status field bit definitions */ 117 #define CYS_WP (0x0002<<8) /* write protected, no write ring */ 118 #define CYS_BSY (0x0004<<8) /* formatter busy */ 119 #define CYS_RDY (0x0008<<8) /* drive ready */ 120 #define CYS_EOT (0x0010<<8) /* end of tape detected */ 121 #define CYS_BOT (0x0020<<8) /* tape is at load point */ 122 #define CYS_OL (0x0040<<8) /* drive on_line */ 123 #define CYS_FM (0x0080<<8) /* filemark detected */ 124 #define CYS_ERR (0x1f00>>8) /* error value mask */ 125 #define CYS_CR (0x2000>>8) /* controller executed retries */ 126 #define CYS_CC (0x4000>>8) /* command completed successfully */ 127 #define CYS_CE (0x8000>>8) /* command execution has begun */ 128 129 #define CYS_BITS "\20\6CR\7CC\10CE\12WP\13BSY\14RDY\15EOT/BOT\16BOT\17OL\20FM" 130 131 /* error codes for CYS_ERR */ 132 #define CYER_TIMOUT 0x01 /* timed out data busy false */ 133 #define CYER_TIMOUT1 0x02 /* data busy false,formatter,ready */ 134 #define CYER_TIMOUT2 0x03 /* time out ready busy false */ 135 #define CYER_TIMOUT3 0x04 /* time out ready busy true */ 136 #define CYER_TIMOUT4 0x05 /* time out data busy true */ 137 #define CYER_NXM 0x06 /* time out memory */ 138 #define CYER_BLANK 0x07 /* blank tape */ 139 #define CYER_DIAG 0x08 /* micro-diagnostic */ 140 #define CYER_EOT 0x09 /* EOT forward, BOT rev. */ 141 #define CYER_BOT 0x09 /* EOT forward, BOT rev. */ 142 #define CYER_HERR 0x0a /* retry unsuccessful */ 143 #define CYER_FIFO 0x0b /* FIFO over/under flow */ 144 #define CYER_PARITY 0x0d /* drive to tapemaster parity error */ 145 #define CYER_CKSUM 0x0e /* prom checksum */ 146 #define CYER_STROBE 0x0f /* time out tape strobe */ 147 #define CYER_NOTRDY 0x10 /* tape not ready */ 148 #define CYER_PROT 0x11 /* write, no enable ring */ 149 #define CYER_JUMPER 0x13 /* missing diagnostic jumper */ 150 #define CYER_LINK 0x14 /* bad link, link inappropriate */ 151 #define CYER_FM 0x15 /* unexpected filemark */ 152 #define CYER_PARAM 0x16 /* bad parameter, byte count ? */ 153 #define CYER_HDWERR 0x18 /* unidentified hardware error */ 154 #define CYER_NOSTRM 0x19 /* streaming terminated */ 155 156 #ifdef CYERROR 157 char *cyerror[] = { 158 "no error", 159 "timeout", 160 "timeout1", 161 "timeout2", 162 "timeout3", 163 "timeout4", 164 "non-existent memory", 165 "blank tape", 166 "micro-diagnostic", 167 "eot/bot detected", 168 "retry unsuccessful", 169 "fifo over/under-flow", 170 "#0xc", 171 "drive to controller parity error", 172 "prom checksum", 173 "time out tape strobe (record length error)", 174 "tape not ready", 175 "write protected", 176 "#0x12", 177 "missing diagnostic jumper", 178 "invalid link pointer", 179 "unexpected file mark", 180 "invalid byte count/parameter", 181 "#0x17", 182 "unidentified hardware error", 183 "streaming terminated" 184 }; 185 #define NCYERROR (sizeof (cyerror) / sizeof (cyerror[0])) 186 #endif 187 188 /* 189 * Masks defining hard and soft errors (must check against 1<<CYER_code). 190 */ 191 #define CYMASK(e) (1<<(CYER_/**/e)) 192 #define CYER_HARD (CYMASK(TIMOUT)|CYMASK(TIMOUT1)|CYMASK(TIMOUT2)|\ 193 CYMASK(TIMOUT3)|CYMASK(TIMOUT4)|CYMASK(NXM)|CYMASK(DIAG)|CYMASK(JUMPER)|\ 194 CYMASK(STROBE)|CYMASK(PROT)|CYMASK(CKSUM)|CYMASK(HERR)|CYMASK(BLANK)) 195 #define CYER_SOFT (CYMASK(FIFO)|CYMASK(NOTRDY)|CYMASK(PARITY)) 196